package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.vo.SocialUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

@Controller
@Slf4j
public class OAuth2Controller {

    @Autowired
    MemberFeignService memberFeignService;

    @GetMapping("/oauth2.0/weibo/success")
    public String weibo(@RequestParam("code") String code, HttpSession session) throws Exception {

        //1、根据code换取accessToken
        //https://api.weibo.com/oauth2/access_token?client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET&grant_type=authorization_code&redirect_uri=YOUR_REGISTERED_REDIRECT_URI&code=CODE
        //https://api.weibo.com/oauth2/authorize?client_id=634348330&response_type=code&redirect_uri=http://gulimall.com/oauth2.0/weibo/success
        Map<String, String> map = new HashMap<>();
        map.put("client_id","634348330");
        map.put("client_secret","5404d4a3e6f1af36735a812c74ff45c7");
        map.put("grant_type","authorization_code");
        map.put("redirect_uri","http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code",code);

        //https://api.weibo.com/oauth2/access_token?client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET&grant_type=authorization_code&redirect_uri=YOUR_REGISTERED_REDIRECT_URI&code=CODE
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", null, null, map);

        //2、登录成功就跳回首页
        if(response.getStatusLine().getStatusCode() == 200){
            //获取到 accessToken
            String json = EntityUtils.toString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);

            //知道当前是哪个社交用户
            //1、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息账号，以后这个社交账号就对应指定的会员）
            //登录或者注册这个社交用户
            R oauthlogin = memberFeignService.oauthlogin(socialUser);
            if(oauthlogin.getCode() == 0){
                MemberRespVo data = (MemberRespVo) oauthlogin.getData("data", new TypeReference<MemberRespVo>() {
                });
                log.info("社交登录成功：{}",data.toString());
                session.setAttribute("loginUser",data);
                return "redirect:http://gulimall.com";
            }else {
                return "redirect:http://auth.gulimall.com/login.html";
            }
        }
        return "redirect:http://auth.gulimall.com/login.html";
    }

}
